Vincent Kompany: How do you replace the impact of a captain, leader and legend like Kompany? You can't really. The 32-year-old should really get a new deal if he can prove he is injury-free.

Eliaquim Mangala: The France defender cost around £40m when City signed him in 2014 but it hasn't worked out. He's still only 27 though and has been linked to Wolves, which could be a good deal for all.

Brahim Diaz: Real Madrid are reportedly set to sign the 19-year-old, who hasn't managed to make the breakthrough at City.

Daniel Sturridge: Once a seriously talented striker, now injuries have reduced him to a backup role. If a club wants to take a punt on him, they might be rewarded.

Alberto Moreno: The Spanish left-back has grown unhappy with his bit-part role but he's not better than Andrew Robertson so he'll likely depart. Barcelona were rumoured to be interested but Sevilla are too.

Lazar Markovic: Loan after loan have followed the winger since he landed at Anfield in 2014. This time, having been with the U23s recently, he'll depart for nothing and won't come back.

*Anthony Martial: Probably the most important of the lot now, the France winger has plenty of potential but hasn't seen eye-to-eye with Jose Mourinho. He would have a lot of suitors if United don't add the optional extra year (which they surely will.)

*Antonio Valencia: The captain also has the option of another year, but at 33 isn't getting any younger.

*Chris Smalling: Mourinho wants a new centre-back and Smalling may pay the price...

*Phil Jones: Or it could be Jones. Neither have massively impressed and it's not difficult to imagine them both moving on.

*Matteo Darmian: The versatile Italian will surely be put out of his misery in January and be allowed to head back to Serie A, rather than have an extra year added. If he doesn't, then they'll keep him as United hate to lose players for nothing.

*Andreas Pereira: Impressed in fits and starts, but has struggled to hold down a regular place. Arsenal were rumoured to be keen, but United are likely to hold onto him for now.

*James Wilson: Spent his most recent loan spell at Aberdeen. The striker needs to give it up and find another club.

Ander Herrera: A return to Athletic Bilbao has been rumoured, as his extra year was triggered last season, but though they are in talks over another extension, United might want to cash in now.

Juan Mata: Hard to see one of the nicest players in the game depart, but talks are ongoing/

Ashley Young: He wants assurances over his role, but will stay and sign a new deal.

Aaron Ramsey: Barcelona, Real Madrid, Bayern Munich, Chelsea, Liverpool, Manchester United... there's not many big clubs who haven't been linked with the 27-year-old midfielder. Arsenal made their feelings clear by retracting a contract offer and he's now set to join a major rival in Europe.

Danny Welbeck: It's very possible that after his latest long-term injury setback, Welbeck might have played his last game for the club. A top striker when fit, but those days are few and far between.

Nacho Monreal: Talks over a new deal have reportedly begun, but that may well stifle the development of Sead Kolasinac and Ainsley Maitland-Niles. Monreal is 32 now and increasingly injury prone too.

Petr Cech: At 36, and having lost the No. 1 spot to Bernd Leno, Cech may decide to retire or continue his career elsewhere.

Stephan Lichtsteiner: Signed for experience, the Switzerland international has been key to Arsenal's dressing room revival but may not be required next season now the new players have bedded in.

David Luiz: At 31, the Brazilian still has a few good years left in him and he's not keen to depart London either -- reportedly turning down a lucrative offer from China in the hope of landing a new deal.

Cesc Fabregas: He says he will stay until the end of the season, but the former Arsenal and Barcelona midfielder is on the way out... most likely to Serie A.

Olivier Giroud: It really depends who Chelsea sign. It's clear that they want a new striker, but if they hold onto Alvaro Morata too, there's no place for Giroud.

Gary Cahill: Once a central piece of Chelsea's defence, the England centre-back has dropped down the pecking order and may need to move on to find first-team football.

Toby Alderweireld: This one is a bit complicated but essentially the Belgium defender has a clause in his contract that allows him to leave for £25m next summer if he has not reached agreement over a new contract. And he hasn't yet. Manchester United are monitoring.

Jan Vertonghen: Spurs surely can't let their two best defenders depart, so one would imagine that a new deal is on the cards. In fact, the player himself expects it to happen.

Mousa Dembele: A hugely underrated player, but Dembele may want to assess his options this summer. He won't be short of suitors, but his injury record may be an issue for the biggest clubs.

Fernando Llorente: One can only play second-fiddle to Harry Kane for so long. His former club, Athletic Bilbao, are reportedly ready to offer the striker an escape route in January.

Michel Vorm: One can only play second-fiddle to Hugo Lloris for so long. It's frankly bizarre that a goalkeeper of Vorm's quality decided to sit on the bench for the past four years but at 35 he probably has nowhere else to go now.

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Laurens: Dembele has to worry about his Barcelona future

ESPN FC's Julien Laurens explains why Ousmane Dembele is finding himself in hot water at Barcelona and what he needs to do to fix it.

Adrien Rabiot: Liverpool, Barcelona, Man United... there are a lot of options for one of the world's top young players. But where will he end up? His attitude could make things interesting.

*Gianluigi Buffon: He's going to be 41 once January ends, but who would bet against him carrying on? His contract has an option of another year but he may want to retire if PSG win the Champions League though.

Alphonse Areola: Sitting behind Buffon has stifled his development. Talks are ongoing over a new deal and he could be the long-term replacement, but may need to wait a bit longer.

Dani Alves: The Brazil defender is 35, but PSG are in need of his experience for now. He's still recovering from a long-term injury but when he does, he did say he wants to play in the Premier League...

Lassana Diarra: He's had a tough career in the last decade, so expect another free transfer to take place as PSG look to free up some wages for another midfielder.

OTHER NOTABLE PLAYERS

Diego Godin, Atletico Madrid: Manchester United might get another bite at the cherry for a world-class, if ageing, defender.

Filipe Luis, Atletico Madrid: He didn't get his move to PSG but he may soon enough.

Mario Balotelli, Nice: Super Mario comes with baggage. But he's still class on his day if anyone is willing to take the risk.